REVIEWS DEALS BIKESHOPS TRAILS

I Want A Hybrid Brake Powered Bike

1528 Views 11 Replies 10 Participants Last post by bhsavery, Nov 2, 2006

consumerbydesign

Discussion Starter · Dec 9, 2005

The spring ratchets from the shock or brake. Short bursts of power, no batteries.

Invent it, get rich, pm me, be generous.
consumer.

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Low_Rider

· #2 · Dec 11, 2005

I can't get my head around what your asking for?

Can you explain with a little more detail?

Dave.

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Store Power

.
The simplest way would be a small wheel rubbing on the back tire that winds up a spring,release the spring with the small wheel pressed up against the tire. Short bursts are all you could ask for but it might be worth an extra pound or two.
A more fancier version would work off a brake roter.Store the power.
Thanks for looking.

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Warthog

· #4 · Dec 12, 2005

Low_Rider said:
I can't get my head around what your asking for?

Can you explain with a little more detail?

Dave.

I imagine he wants something like a giant watch spring, which would wind up when you applied the brakes (you'd be using the winding of the spring as your brake rather then the normal brakes). Once the spring was wound up, you could engage it for short bursts of speed.

The problem is, how much useful energy could you really store in a spring without it being dangerous?

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croatiansensation

· #5 · Dec 12, 2005

It would take a lot of monkey motion (techincal term. . .) to ensure linear brake force as well. Interesting idea though. . . . .

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consumerbydesign

Discussion Starter · #6 · Dec 12, 2005

Lawn Mower Starter

The old kind that you wind up then release,mount that baby on the hub and have a way to ratchet it up. A closed unit would not be dangerous. Short bursts from power saved from bob or braking would assist in acceleration,a hugh energy savings.
I would still consider this pure biking.

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LBmtb

· #7 · Dec 27, 2005

Having that avatar and the name 'consumerbydesign' makes you look like a corporate robot of somekind. Funny, wierd, and interesting idea. Kind of what a turbo does for a car but on a smaller scale.
But I wouldnt consider it 'pure biking'. Would seem at best like a bike with too many bells and whistles.

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Stuart B

· #8 · Dec 28, 2005

consumerbydesign said:
The old kind that you wind up then release,mount that baby on the hub and have a way to ratchet it up. A closed unit would not be dangerous. Short bursts from power saved from bob or braking would assist in acceleration,a hugh energy savings.
I would still consider this pure biking.

You don't get anything for nothing. You may wind this spring up from bob, but i doubt it. This spring is going to resist being wound...as springs do. if this spring is going to be strong enough to proved any force you can feel, its going to stop bob in its tracks, and affect the suspension significantly...and not get wound up. it might wind up on bigger bumps, but the supension is being held back by the spring, reducing its performance and not winding up your spring much.

any mechanical clockwork mechanism that is to store a useful amount of power and have enough oomph is probably going to be heavy. why not just stap some lead to your bike and ride a load....take the lead off with you new fitness and ligter bike you'll feel like your flying. Id rather not cart around a heavy clockwork mechanism all the time for an occasional uncontrolled squirt (maybe even a dribble

) of extra power for a few seconds.

Stu

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Slanter

· #9 · Dec 28, 2005

Instead of storing the energy in a spring, I'd try using compressed air. Stick a miniature compressor on the hub and use the frame as an air tank, with a safety valve so you don't inflate the frame to a dangerously high pressure. Plus, with a few check valves you can set this up so the shocks also inflate the frame. A much more simple and elegant solution than trying to use springs.

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lush

· #10 · Dec 31, 2005

Hybrid Possible

consumerbydesign said:
The spring ratchets from the shock or brake. Short bursts of power, no batteries.

Invent it, get rich, pm me, be generous.
consumer.

I have read an article about this very idea. As I recall a college professor from North Cal had this developed a few years ago. He had a motor build around his BB, during braking the bike would store up energy and expell on the following acelleration. I thinking I read about it in MBA, or BIKE. It was to have been a fast climber, power assisted.

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mikebowyer

· #11 · Nov 2, 2006

i've already got calculations going on the compressed air on the 4x8' white board in my room.

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bhsavery

· #12 · Nov 2, 2006

i believe the technical term for this is "Regenerative braking".

some hybrid cars use it. Feasabile in a mt bike? I dunno

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